Reproduction – 1970-4 Cuda And Challenger Hood Insulation Pad. 1/2″ thick black fiberglass hood insulation pad with fiber reinforced foil backing for all 70-74 E bodies. The matte black fiberglass faces down. The foil backing, located between the pad and the hood, aids in reflecting infra-red heat from the hood and also reinforces the pad. No other hood pad manufacturer is adding this fiberglass mesh reinforced foil backing. Plastic clips included.